I got messaged about my pool and the browser warning so just thought I would toss out a general response.

While https://scsy.coreprovision.com does use SSL (https) to protect your traffic like every other, it's currently configuired with a self-signed cert.  Basically this means that your browser is going to complain when you first access the site.  

If you're wondering why I use a self-signed cert instead of one from a Certificate Authority (CA), well those don't come free, and if you take a look at the prices and you'll probably understand why I'm not shelling out for one for a page that is still in a beta.    https://www.digicert.com/ssl-certificate-comparison.htm

And yes the pool is free right now.  No percentage fees, no transaction fees to get your coins out either.  You can verify this on the Other -> Terms and Conditions tab.  Also to change things up a little this is a PPLNS pool as opposed to PROP like the others.   Here is a decent overview of the different systems.  https://forum.feathercoin.com/index.php?/topic/4145-guide-pps-rbpps-prop-pplns-whats-the-difference/